I'll explain how I got it.....
So I focused on the numbers that have their digits as a sum of 8 first
8,17,26,35,44,53,62,71,80
I added 16+8=24
You know CPhill?!?! 8 is also correct!!!! There is nothing to swap....unless you put a 0 at the beginning, which I never do
17+16=33
71 is the swapped 17
26+16=42
62 is the swapped 26
35+16=51
53 is the swapped 35
44+16=60
44 is the swapped 44
53+16=69
35 is the swapped 53
62+16=78
26 is the swapped 62
71+16=89
17 is the swapped 71
80+16=96
8 is the swapped 80
First time around....I stared at my work and saw well 26*3=78 so that's the only answer
Now I see 8 could be correct too!!!!
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